It is 120Gbit agg in a SCB system as the limit is 120G/slot. This is in the form of 30Gbit per TRIO and 1 TRIO per 4 ports.
So, use 3 of 4 in each bank if you want 100% line rate. SCBE increases this to 160Gbit or better (depending on age of chassis) allowing for line rate on all 16. Agree, mixing DPC and MPC is a terrible idea. Don't like DPC to begin with, but nobody in their right mind mixes DPCs and MPCs. On 1/14/16 13:09, Saku Ytti wrote: > On 14 January 2016 at 23:11, Mark Tinka <mark.ti...@seacom.mu> wrote: > > Hey, > >>> A surplus dealer recommended the MPC-3D-16XGE-SFPP-R-B, which is less >>> than $1k/port used. But it only supports full bandwidth on 12 ports, >>> would be oversubscribed 4:3 if all 16 are in use. They are Trio chipset. > >> I wouldn't be too concerned about the throughput on this line card. If >> you hit such an issue, you can easily justify the budget for better line >> cards. > > Pretty sure it's as wire-rate as MPC1, MPC2 on SCBE system. > > Particularly bad combo would be running with DPCE. Basically any > MPC+DPCE combo is bad, but at least on MPC1/MPC2 systems you can set > the fabric to redundancy mode. But with 16XGE+SCB you probably don't > want to. > > There is some sort of policing/limit on how many fabric grands MPC > gives up, like if your trio needs 40Gbps of capacity, and is operating > in normal mode (not redundancy) then it'll give 13.33Gbps of grands to > each SCB. > However as DPCE won't use the third one, DPCE could only send at > 26.66Gbps towards that 40Gbps trio. While MPC would happily send > 40Gbps to MPC. > -- ------------------------------------------------------------------------ Christopher E. Brown <chris.br...@acsalaska.net> desk (907) 550-8393 cell (907) 632-8492 IP Engineer - ACS ------------------------------------------------------------------------ _______________________________________________ juniper-nsp mailing list juniper-nsp@puck.nether.net https://puck.nether.net/mailman/listinfo/juniper-nsp